[wp-trac] [WordPress Trac] #51404: 'Change logo' button in customizer doesn't work in Firefox

[WordPress Trac]

#51404: 'Change logo' button in customizer doesn't work in Firefox
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 Reporter:  majorlabel         |       Owner:  (none)
     Type:  defect (bug)       |      Status:  new
 Priority:  normal             |   Milestone:  Awaiting Review
Component:  Customize          |     Version:  5.5.1
 Severity:  normal             |  Resolution:
 Keywords:  reporter-feedback  |     Focuses:
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Comment (by majorlabel):

 I opened a recent local copy of the wordpress installation where I have
 this issue on. There the media modal does work, and the CSS is loaded
 through
 {{{
 load-style.php
 }}}
 I've noticed on this installation that the auto-updater botches files due
 to, what seems to be encoding issues. Can someone please help on how to
 debug this specific part of wordpress? I am a developer but not very
 knowledgeable when it comes to WordPress development.

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Ticket URL: <https://core.trac.wordpress.org/ticket/51404#comment:4>
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